Flywheel, in particular for motor vehicles

Details Flywheel, in particular for motor vehicles Flywheel, in particular for motor vehicles

1995-12-14

1998-10-20

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Axially engaging

74574, 192212, 1922141, F16F 1512

Patent

active

058233113

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to damped flywheels, especially for a motor vehicle, of the kind comprising two coaxial masses mounted for movement of one with respect to the other against the action of resilient means and friction means.
2. Description of the Prior Art
Such a damped flywheel, which is also referred to as a double damped flywheel, is described for example in the document FR-A-2 565 650 (U.S. Pat. No. 5,120,276).
In that document, the friction device is interposed operatively between the first mass (i.e. a plate of the latter), which is adapted to be fixed to a drive shaft (i.e the crankshaft of the engine of the vehicle), and a disc fixed on the second mass, which comprises a reaction plate for a friction clutch, at the inner periphery of the damped flywheel. The second mass is mounted for rotation on the first mass through an interposed bearing.
It is consequently necessary to machine the appropriate part of the plate of the first mass.
This type of friction device is also well adapted for resilient means which work circumferentially between the two masses.
It is not suitable for damped flywheels in which the resilient means work in a generally radial direction between the two masses.
In general, it can be desirable, regardless of the type of resilient means employed, to avoid locating the said friction device in the vicinity of the plate of the first mass.
An object of the present invention is to provide a friction device which is capable of being used with any type of resilient means, and which does not involve the plate of the first mass.


SUMMARY OF THE INVENTION

According to the invention, a damped flywheel of the type defined above is characterised in that the first mass carries a stiffening member fixed to its outer periphery and lying close to the second mass, and in that the friction means are located between the said member and the said second mass.
With this arrangement, use can be made of the space that exists between the said member and the plate of the first mass, in order to mount therein resilient means which work either generally radially between the two masses, or circumferentially between these latter.
It is thus possible easily to fix the first mass on to the crankshaft of the engine, especially when the bearing which is interposed between the two masses is of reduced size, with its outer diameter being smaller than the diameter of the fastening holes.
The said member may be used for the mounting of circumferentially acting resilient means, and to provide a base on which pivot pins are mounted.
It will be appreciated that this member stiffens the first mass, which conventionally carries at this location a cantilevered skirt which is oriented generally axially.
The friction means play a part in the stiffening of the first mass, because in general terms they constitute a spacing means interposed between the second mass and the stiffening member.
According to one feature, the friction means are interposed operatively between one of the inner and outer peripheries of the said member and the second mass.
Where the said means work at the outer periphery, the friction torque is thereby able to be increased.
Where the said means work at the inner periphery, the inertia of the second mass can be increased.
The said member preferably includes, at the appropriate one of its peripheries, an axially oriented flange which has at its free end lugs which are bent back radially, either towards the axis of the assembly or away from the axis of the assembly, as the case may be.
This flange has slots which define mortices.
This enables at least one friction ring and an axially acting resilient ring to be fitted between the lugs and the transverse portion of the said member. The friction ring is then arranged to be mounted in rotation, optionally with a clearance, on the second mass, while the axially acting resilient ring bears directly or indirectly on the lugs of the stiffening member so as to act on an application ring which has te

REFERENCES:
patent: 1984577 (1934-12-01), Griswald
patent: 3499512 (1970-03-01), Maurice
patent: 4362230 (1982-12-01), Martinex Corral
patent: 4662239 (1987-05-01), Worner et al.
patent: 4856636 (1989-08-01), Meinhard
patent: 4972734 (1990-11-01), Hyodo et al.
patent: 4996892 (1991-03-01), Yamamoto
patent: 5120276 (1992-06-01), Maucher et al.
patent: 5367920 (1994-11-01), Bonfilio
patent: 5533815 (1996-07-01), Schierling et al.

Affiliated with

Also associated with

Rating

Flywheel, in particular for motor vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flywheel, in particular for motor vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flywheel, in particular for motor vehicles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-234869